Influence du stress de prédation sur la reproduction de la chèvre de montagne

Authors: Dulude-De Broin, Frédéric
Advisor: Côté, Steeve D.
Abstract: The impact of predation on prey goes beyond the direct consumption of individuals. In some cases, the mere presence of predators in an ecosystem can drastically impair prey reproduction. The induction of chronic physiological stress could act as the mechanism underlying such effects. My objective was to assess whether predator-induced stress could impair reproduction in an alpine ungulate, the mountain goat. We first validated a method to measure physiological stress using faeces and hair as biomarkers, and then analysed a longterm data base on a population of wild marked mountain goats. Our results indicate that predation may act on reproduction in mountain goats through the induction of chronic stress. In addition to its contribution to the understanding of indirect effects of predation in mammals, this study clarifies the causes behind the decline of a wild mountain goat population.
Document Type: Mémoire de maîtrise
Issue Date: 2019
Open Access Date: 14 January 2020
Grantor: Université Laval
Collection:Thèses et mémoires

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